#include <stdio.h>

int main()
{
    int a[10][10] = {0};
    int n = 5;
    int i = 0;
    int j = 0;

    for (i=0;i<n;i++)
    {
        a[i][0] = 1;
        a[i][i] = 1;
    }
    for (i=2;i<n;i++)
    {
       for(j=1;j<i;j++)
       {
         a[i][j] = a[i-1][j-1] + a[i-1][j];
       }
    }
       
    for(int i = 0;i<n;i++)
    {
       for(int k =0; k < n-i;k++)
          printf(" ");
       for(j=0;j<=i;j++)
       {
        printf("%d ",a[i][j]);
       }
     
       printf("\n");
    }
    return 0;
      
}